{"id":31087,"date":"2024-03-18T16:56:24","date_gmt":"2024-03-18T15:56:24","guid":{"rendered":"https:\/\/dev4.homepage-balingen.de\/?page_id=31087"},"modified":"2024-03-19T11:12:54","modified_gmt":"2024-03-19T10:12:54","slug":"gnomonik","status":"publish","type":"page","link":"https:\/\/www.skaphe.de\/en\/gnomonik\/","title":{"rendered":"Gnomonics"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div class=\"vc_row wpb_row vc_row-fluid vc_custom_1710834581735 vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative wpex-vc_row-has-fill wpex-vc-reset-negative-margin wpex-has-overlay wpex-has-overlay--69f4ce9ccd054\" style=\"min-height:40vh;background-position:50% 50%!important;background-size:cover!important;\"><div class=\"wpex-bg-overlay-wrap wpex-absolute wpex-inset-0 wpex-rounded-inherit\"><style class=\"wpex-bg-overlay-css\">.wpex-has-overlay--69f4ce9ccd054 > .wpex-bg-overlay-wrap .wpex-bg-overlay{background-color:#b89d5a;opacity:70%;}<\/style><span class=\"wpex-bg-overlay color wpex-absolute wpex-inset-0 wpex-rounded-inherit wpex-duration-500 wpex-opacity-60 wpex-bg-black\"><\/span><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69f4ce9ccdd75{animation-duration:2s;color:#ffffff;}<\/style><h1 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-text-center  wpb_animate_when_almost_visible wpb_fadeIn fadeIn vcex_69f4ce9ccdd75\"><span class=\"vcex-heading-inner wpex-inline-block\">Gnomonics<\/span><\/h1><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid nobord vc_row-o-equal-height vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative bg-fixed-top wpex-vc-bg-fixed wpex-vc-bg-top\" style=\"background-position:50% 0%!important;background-size:cover!important;\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:40px;\"><\/div><style>.vcex-heading.vcex_69f4ce9ccf1f4{animation-duration:2s;}<\/style><h2 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-text-center vcex_69f4ce9ccf1f4\"><span class=\"vcex-heading-inner wpex-inline-block\">The doctrine of the sundial<\/span><\/h2><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:20px;\"><\/div>\n\t<div style=\"text-align:center;\" class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Today, researching the history of sundials is also part of gnomonics. Like the first use of the sundial, it probably goes back to the Babylonians. However, it reached its peak in Greek and Roman antiquity.<\/p>\n<p>The name Scaphe was coined in the 3rd century BC. The astronomer Aristarchus of Samos, whose hollow ball sundial was designed by the Roman Vitruvius around 30 BC. BC in the ninth of his books on architecture. It is designed as a mirror image of the visible celestial sphere.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:20px;\"><\/div>\n\t<div style=\"font-size:14px;text-align:center;\" class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Source:\u00a0<a href=\"https:\/\/de.wikipedia.org\/wiki\/Gnomonik\">Wikipedia<\/a><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:40px;\"><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_row-o-content-middle vc_row-flex wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-7\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69f4ce9cd034e{animation-duration:2s;}<\/style><h2 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl vcex_69f4ce9cd034e\"><span class=\"vcex-heading-inner wpex-inline-block\">Inventor of the scaphe: Aristarchus of Samos<\/span><\/h2><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:20px;\"><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>As early as 250 BC. The Greek philosopher Aristarchus constructed the hollow sphere sundial in the 4th century BC. The scaphe was very popular among the Greeks and stood in many public places.<\/p>\n<p>From his astronomical explorations he concluded that the sun is a stationary pole orbited by the planets.<\/p>\n<p>Around 20 years later, Eratosthenes of Cyrene recognized from the scaphe that the earth is not flat and was even able to calculate the circumference of the earth with amazing accuracy.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear visible-phone\" style=\"height:30px;\"><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-5\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><figure class=\"vcex-image vcex-module wpex-text-center\"><div class=\"vcex-image-inner wpex-relative wpex-inline-block\"><img width=\"239\" height=\"425\" src=\"https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/Aristarchus.jpg\" class=\"vcex-image-img wpex-align-middle\" alt=\"\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/Aristarchus.jpg 239w, https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/Aristarchus-169x300.jpg 169w\" sizes=\"auto, (max-width: 239px) 100vw, 239px\" \/><\/div><\/figure><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:50px;\"><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_custom_1710777883361 vc_row-o-equal-height vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative wpex-vc_row-has-fill bg-fixed wpex-vc-bg-fixed wpex-vc-bg-center wpex-vc-reset-negative-margin wpex-has-overlay wpex-has-overlay--69f4ce9cd2a6b\" style=\"min-height:40vh;background-position:50% 50%!important;background-size:cover!important;\"><div class=\"wpex-bg-overlay-wrap wpex-absolute wpex-inset-0 wpex-rounded-inherit\"><style class=\"wpex-bg-overlay-css\">.wpex-has-overlay--69f4ce9cd2a6b > .wpex-bg-overlay-wrap .wpex-bg-overlay{background-color:#ffffff;}<\/style><span class=\"wpex-bg-overlay color wpex-absolute wpex-inset-0 wpex-rounded-inherit wpex-duration-500 wpex-opacity-60 wpex-bg-black\"><\/span><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:40px;\"><\/div><style>.vcex_69f4ce9cd300e{font-size:40px!important;}@media (max-width:1024px){.vcex_69f4ce9cd300e{font-size:36px!important;}}@media (max-width:959px){.vcex_69f4ce9cd300e{font-size:32px!important;}}@media (max-width:767px){.vcex_69f4ce9cd300e{font-size:28px!important;}}@media (max-width:479px){.vcex_69f4ce9cd300e{font-size:28px!important;}}<\/style>\n\t<div style=\"font-weight:700;text-align:center;\" class=\"wpb_text_column vcex_69f4ce9cd300e wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>With the help of the scaphe, astronomers were able to calculate that the Earth orbits the sun 2,000 years ago<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:40px;\"><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_row-o-content-middle vc_row-flex wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:50px;\"><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-7\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69f4ce9cd3c34{animation-duration:2s;}<\/style><h2 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl vcex_69f4ce9cd3c34\"><span class=\"vcex-heading-inner wpex-inline-block\">Erastothenes&#039; calculation of the circumference of the earth using the scaphe<\/span><\/h2><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:20px;\"><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Eratosthenes observed in the city of Syene (Aswan) how, on one day at the highest point of the sun, the bottom of a deep well was completely illuminated by the sun.<br \/>\nFrom this he concluded that the sun must be vertical in the sky at that moment.<\/p>\n<p>He then measured the angle of incidence of the sun in Alexandria using the scaph and found that the angle corresponded to 1\/50 of the circumference of a circle (7.2 degrees).<\/p>\n<p>Now he could calculate the circumference of the earth, since the distance between Alexandria and Syene had already been measured. His result: The circumference of the earth is around 50 times as long as the distance from Alexandria to Syene.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear visible-phone\" style=\"height:30px;\"><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-5\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><figure class=\"vcex-image vcex-module wpex-text-center\"><div class=\"vcex-image-inner wpex-relative wpex-inline-block\"><img width=\"229\" height=\"450\" src=\"https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/Sonnenuhr.png\" class=\"vcex-image-img wpex-align-middle\" alt=\"\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/Sonnenuhr.png 229w, https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/Sonnenuhr-153x300.png 153w\" sizes=\"auto, (max-width: 229px) 100vw, 229px\" \/><\/div><\/figure><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:50px;\"><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_custom_1710777828741 vc_row-o-equal-height vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative wpex-vc_row-has-fill bg-fixed wpex-vc-bg-fixed wpex-vc-bg-center wpex-vc-reset-negative-margin wpex-has-overlay wpex-has-overlay--69f4ce9cd63b4\" style=\"min-height:40vh;background-position:50% 50%!important;background-size:cover!important;\"><div class=\"wpex-bg-overlay-wrap wpex-absolute wpex-inset-0 wpex-rounded-inherit\"><style class=\"wpex-bg-overlay-css\">.wpex-has-overlay--69f4ce9cd63b4 > .wpex-bg-overlay-wrap .wpex-bg-overlay{background-color:#ffffff;}<\/style><span class=\"wpex-bg-overlay color wpex-absolute wpex-inset-0 wpex-rounded-inherit wpex-duration-500 wpex-opacity-60 wpex-bg-black\"><\/span><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:40px;\"><\/div><style>.vcex_69f4ce9cd6da9{font-size:40px!important;}@media (max-width:1024px){.vcex_69f4ce9cd6da9{font-size:36px!important;}}@media (max-width:959px){.vcex_69f4ce9cd6da9{font-size:32px!important;}}@media (max-width:767px){.vcex_69f4ce9cd6da9{font-size:28px!important;}}@media (max-width:479px){.vcex_69f4ce9cd6da9{font-size:28px!important;}}<\/style>\n\t<div style=\"font-weight:700;text-align:center;\" class=\"wpb_text_column vcex_69f4ce9cd6da9 wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p class=\"aussage\">The earth is not flat.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:20px;\"><\/div>\n\t<div style=\"font-weight:700;text-align:center;\" class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Eratosthenes of Cyrene, astronomer and mathematician<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:40px;\"><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:50px;\"><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-7\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69f4ce9cd8a8c{animation-duration:2s;}<\/style><h2 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl vcex_69f4ce9cd8a8c\"><span class=\"vcex-heading-inner wpex-inline-block\">The development of the sundial<\/span><\/h2><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:20px;\"><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>While in the early days of time measurement a simple rod that was inserted into the earth was used to establish a relationship between time and shadows, the sundial continued to develop.<\/p>\n<p>The idea of the hemisphere came with the hollow sphere sundial that Aristarchus used for his scientific calculations. The south-facing part of the spherical shape was not functionally needed.<br \/>\nEven at this time it was possible to calculate the length of a year relatively accurately.<\/p>\n<p>Great scientific progress occurred between the 14th and 15th centuries. The idea of pointing the shadow-casting rod parallel to the Earth&#039;s axis made the time scale clearer. The gnomon&#039;s shadow was now always the same length, regardless of the season. However, determining the latitude was now even more important, as the angle for aligning the gnomon depends on it.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vcex-spacing wpex-w-100 wpex-clear visible-phone\" style=\"height:30px;\"><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-5\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><figure class=\"vcex-image vcex-module wpex-text-center\"><div class=\"vcex-image-inner wpex-relative wpex-inline-block\"><img width=\"595\" height=\"590\" src=\"https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/SunDialAiKhanoum.jpg\" class=\"vcex-image-img wpex-align-middle\" alt=\"\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/SunDialAiKhanoum.jpg 595w, https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/SunDialAiKhanoum-300x297.jpg 300w, https:\/\/www.skaphe.de\/wp-content\/uploads\/2024\/03\/SunDialAiKhanoum-150x150.jpg 150w\" sizes=\"auto, (max-width: 595px) 100vw, 595px\" \/><\/div><\/figure><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vcex-spacing wpex-w-100 wpex-clear\" style=\"height:50px;\"><\/div><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"GnomonicsThe study of the sundial Today, research into the history of sundials is also part of gnomonics. Like the first use of the sundial, it probably goes back to the Babylonians. However, it reached its peak in Greek and Roman antiquity. The name skaphe was coined in the 3rd century BC by the astronomer Aristarchus of Samos, whose\u2026","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-31087","page","type-page","status-publish","hentry","entry","no-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Gnomonik - Skaphe - die Hohlkugel-Sonnenuhr<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.skaphe.de\/en\/gnomonik\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gnomonik - Skaphe - die Hohlkugel-Sonnenuhr\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.skaphe.de\/en\/gnomonik\/\" \/>\n<meta property=\"og:site_name\" content=\"Skaphe - 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